Mint Chocolate Brownies | Easy St Patrick’s Day Fudgy Brownies
Mint Chocolate Brownies have a special way of capturing the spirit of any festive occasion, especially St. Patrick’s Day. Imagine sinking your teeth into a fudgy brownie layered with vibrant mint frosting and topped with rich chocolate ganache. The combination of textures and flavors creates a delightful experience that’s hard to resist. Fresh mint taste mingled with the chocolate’s richness provides an exhilarating contrast sure to satisfy any sweet tooth. These brownies are not only delicious but also incredibly easy to make, making them a go-to treat for any gathering.
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When I first made Mint Chocolate Brownies for a friend’s gathering, I was astounded by the warm compliments that followed. It’s incredible how a simple recipe can evoke such smiles and happiness. These treats are perfect for anyone looking to bake something that feels festive and special without spending all day in the kitchen. Plus, they’re great for kids and adults alike! Whether you’re celebrating St. Patrick’s Day, a birthday, or just a Tuesday evening, these brownies will make the occasion even sweeter. I can’t wait for you to try them!
Why You’ll Love This Recipe
- Simple & Quick: Just 15 minutes of prep time and 40 minutes in the oven makes these brownies an easy baking project.
- Irresistible Flavor: Experience a luscious blend of mint, chocolate, and a creamy finish that’s simply mouthwatering.
- Eye-Catching Appeal: The green mint frosting and glossy ganache make these brownies look impressive and festive.
- Flexible Serving: Perfect for parties, casual snacks, or even a cozy night-in treat.
- Diet-Friendly Options: There are plenty of ways to adapt this recipe for gluten-free or dairy-free diets!

Ingredients You’ll Need
- ½ cup (113g) unsalted butter: This forms the base of your brownies, giving them a rich, fudgy texture. Use room temperature butter for better mixing.
- 8 ounces (227g) semi-sweet chocolate: The star of the show; this will melt down into your batter for deep chocolate flavor. If needed, dark chocolate or milk chocolate can work too.
- ¾ cup (150g) firmly packed brown sugar: Adds moisture and a slight molasses flavor that complements the chocolate beautifully. Granulated sugar could substitute, but the brownies may lose some tenderness.
- ¼ cup (50g) granulated sugar: Balances the richness from the brown sugar, contributing to a sweeter profile.
- 3 large eggs: Preferably at room temperature, they help in achieving that perfect bake while providing structure. Cold eggs can make the batter lumpy.
- 1 teaspoon vanilla extract: This enhances the overall flavor, making it even more delightful.
- ¾ cup (90g) all-purpose flour: The right amount provides just enough structure for the brownies. Be sure to measure accurately for best results.
- ¼ teaspoon salt: Balances sweetness and intensifies flavors.
- ½ cup (113g) unsalted butter (softened): Essential for the mint frosting, it needs to be softened to ensure a creamy consistency.
- 2 cups (240g) powdered sugar: This will sweeten and thickly texture your frosting. You can sift it for a smoother finish if you prefer.
- ¼ cup (60ml) milk or cream: Adds creaminess to the frosting. If you’re dairy-free, oat or almond milk works quite well.
- ½ to ¾ teaspoon peppermint extract: This gives the brownies their minty punch, so adjust according to your taste preference.
- 2 drops green liquid or gel food coloring: Just for visual appeal! This is optional but adds a festive touch.
- 1 cup (175g) semi-sweet chocolate chips: Adds wonderful pockets of melted chocolate in every bite. You can use milk chocolate chips if you prefer a sweeter brownie.
- ⅔ cup (160ml) heavy cream: Needed for making the glossy chocolate ganache that tops the brownies, giving a rich finish.
How to Make Mint Chocolate Brownies | Easy St Patrick’s Day Fudgy Brownies
Preheat the Oven: Start by preheating your oven to 350ºF (177ºC). Prepare an 8″ or 9″ square baking pan by lining it with foil and spraying it with nonstick spray. This will help you lift the brownies out easily once they’ve cooled.
Melt Chocolate & Butter: In a medium saucepan over medium heat, melt the ½ cup of unsalted butter and the 8 ounces of coarsely chopped semi-sweet chocolate. Stir them frequently until everything is completely smooth, then allow the mixture to cool for about 15 minutes.
Combine Sugars & Eggs: Whisk the ¾ cup brown sugar and ¼ cup granulated sugar into the cooled chocolate mixture until well combined. Next, add the 3 large eggs one by one, whisking after each addition until everything is smooth. Finally, mix in the 1 teaspoon of vanilla extract.
Mix in Dry Ingredients: Gently fold in the ¾ cup all-purpose flour and ¼ teaspoon salt until just combined. Be careful not to overmix as you want to maintain that fudgy texture.
Bake Brownies: Pour your brownie batter into the prepared pan. Bake for 25-30 minutes or until a toothpick inserted in the center comes out mostly clean—it should have a few moist crumbs but not be wet. Allow them to cool completely before moving on to the next steps.
Make Mint Frosting: In a large bowl, use a handheld mixer or a stand mixer fitted with a paddle attachment to beat the ½ cup of softened unsalted butter on medium speed until creamy, about 2 minutes. With the mixer on low, add in 2 cups of powdered sugar, ½ to ¾ teaspoon peppermint extract, and ¼ cup of milk or cream. After adding 2 drops of green food coloring, increase the mixer speed to medium and beat until smooth—about 3 minutes.
Prepare Ganache: Place 1 cup of semi-sweet chocolate chips into a small bowl and set aside. In a small saucepan over medium heat, heat ⅔ cup of heavy cream while whisking occasionally until steaming. Remove from heat and pour the hot cream over the chocolate chips, whisking until smooth. Let the ganache cool for at least 20 minutes before using.
Frost Brownies: Once the brownie base is completely cool, use a spatula to evenly spread the mint frosting on top.
Add Ganache: Pour the cooled ganache evenly over the mint layer. It should spread out naturally, but feel free to help it along with a spatula if needed.
Chill & Set: Pop the pan of brownies into the refrigerator for at least 2 hours to let the ganache set completely. This ensures that you will have clean cuts when serving.
Cut & Serve: When ready to cut, lift the brownies out of the pan using the foil overhang. Use a sharp knife for clean cuts, wiping it down between each slice to prevent smearing the ganache. These brownies can be stored in the refrigerator for up to one week or frozen for up to 3 months.

Storing & Reheating
To store Mint Chocolate Brownies at room temperature, keep them in an airtight container for up to 3 days. If you choose to refrigerate them, a covered dish will keep them fresh for up to one week. For freezing, wrap individual brownies in plastic wrap and then place them in a labeled freezer bag for up to 3 months. When you’re ready to enjoy them, simply let them thaw in the refrigerator overnight. While the texture may slightly change after freezing, a quick trip to the microwave for about 10 seconds can refresh them nicely.
Chef’s Helpful Tips
- Ensure your butter and eggs are at room temperature for a smoother mix; cold butter can cause lumps.
- Avoid overbaking the brownies; they should be soft in the center while still cooked through.
- If your mint frosting is too stiff, adding a little extra milk can create the perfect consistency.
- Consider chilling the brownies before cutting for cleaner edges and a more polished presentation.
- Experiment with the level of peppermint extract to find your favorite flavor balance.
Mint Chocolate Brownies bring together a thrilling mixture of flavors and textures that will sweeten up any occasion. Not only are they easy to make, but they’re also exceptionally wonderful for sharing! I encourage you to try this recipe and adapt it to your taste. Whether you’re adding nuts for extra crunch or adjusting the mint flavor, these brownies are a perfect canvas for your creativity. Enjoy every fudgy bite; you deserve it!
Recipe FAQs
Can I make these brownies gluten-free?
Absolutely! You can substitute the all-purpose flour with a 1:1 gluten-free baking blend. Just ensure that the rest of your ingredients are gluten-free, including the chocolate chips.
Can I use a different kind of frosting?
Yes! If you’re not a huge fan of mint frosting, feel free to use a simple buttercream or even a cream cheese frosting. Just make sure any substitutes pair well with the chocolate ganache!
How can I enhance the chocolate flavor?
For an intense chocolate experience, you can use dark chocolate instead of semi-sweet, or even add a tablespoon of espresso powder to the batter. This will amplify the chocolate notes beautifully.
What’s the best way to reheat leftover brownies?
To reheat your brownies without sacrificing that fudgy texture, microwave them for about 10-15 seconds. This will warm them up nicely without making them dry. Enjoy!
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📖 Recipe Card

Mint Chocolate Brownies | Easy St Patrick’s Day Fudgy Brownies
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Total Time: 55 minutes
- Yield: 16 servings 1x
- Category: Desserts
- Method: Baking
- Cuisine: American
Description
Mint Chocolate Brownies are a deliciously fudgy treat, perfect for any celebration! The combination of rich chocolate and refreshing mint makes these simple brownies a delightful choice for gatherings or a sweet indulgence at home.
Ingredients
- ½ cup (113g) unsalted butter cut into 6-8 slices
- 8 ounces (227g) semi-sweet chocolate coarsely chopped
- ¾ cup (150g) firmly packed brown sugar
- ¼ cup (50g) granulated sugar
- 3 large eggs room temperature preferred
- 1 teaspoon vanilla extract
- ¾ cup (90g) all-purpose flour be sure to measure properly
- ¼ teaspoon salt
- ½ cup (113g) unsalted butter softened to room temperature
- 2 cups (240g) powdered sugar
- ¼ cup (60ml) milk or cream
- ½ to ¾ teaspoon peppermint extract
- 2 drops green liquid or gel food coloring
- 1 cup (175g) semi-sweet chocolate chips
- ⅔ cup (160ml) heavy cream
Instructions
- Preheat the oven to 350ºF (177ºC). Line an 8" or 9" square baking pan with foil and spray with nonstick spray. Set aside.
- In a medium saucepan over medium heat, melt the butter and chopped chocolate, stirring frequently until completely smooth. Allow to cool for about 15 minutes.
- Whisk sugar into cooled chocolate mixture until combined. Add the eggs one at a time, whisking after each addition until smooth. Whisk in the vanilla. Add the flour and salt and stir gently until completely combined.
- Pour the batter into the prepared pan. Bake brownies for 25-30 minutes or until a toothpick inserted in the center comes out mostly clean. Allow brownies to cool completely before moving on to the other two layers.
Notes
For a richer chocolate flavor, consider adding a tablespoon of cocoa powder to the batter.
Ensure that you measure the flour correctly to avoid dense brownies.
Feel free to adjust the amount of peppermint extract to suit your taste.
Nutrition
- Serving Size: 1 brownie
- Calories: 225
- Sugar: 20g
- Sodium: 50mg
- Fat: 10g
- Saturated Fat: 6g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 32g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 41mg





